Title :
A total solution for a 9600-b/s modem transmitter chip
Author :
Haspeslagh, Johan J J ; Sansen, Willy M C
Author_Institution :
Alcatel Bell Telephone, Antwerp, Belgium
fDate :
6/1/1990 12:00:00 AM
Abstract :
A single-chip analog transmitter (TX chip) for a V29-V32 9600-b/s modem has been implemented in a 3-μm CMOS n-well process. A high level of integration permits a low-cost, high-performance modem to be built. The TX chip is composed of analog, switched capacitor, and digital circuits. The important functions realized are the phase-point generator, the cosine roll-off low-pass filter, the modulator, and the programmable equalization filters. The chip occupies 29 mm2 and dissipates 300 mW
Keywords :
CMOS integrated circuits; low-pass filters; modems; switched capacitor networks; 3 micron; 300 mW; 9600 bit/s; CMOS n-well process; TX chip; V29-V32; analogue circuits; cosine roll-off low-pass filter; digital circuits; modem transmitter chip; modulator; phase-point generator; programmable equalization filters; switched capacitor; Circuits; Digital signal processing chips; Echo cancellers; Frequency; Low pass filters; Modems; Phase modulation; Quadrature amplitude modulation; Telephony; Transmitters;
Journal_Title :
Solid-State Circuits, IEEE Journal of
